When your car's Check Engine light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap.
If you experience any bleeding period after this 20 days, it will probably be the real period. This normally comes at about 4 to 6 weeks after the miscarriage.
Bleeding After a Natural Miscarriage. The duration of bleeding after a miscarriage is different for every woman, but the bleeding should stop within about two weeks, in most cases. A longer bleeding time could be a sign of an incomplete miscarriage, meaning that tissue from the pregnancy is still present in the uterus.